Ara es mostren els items 149-168 de 214

    • On the choice of the number of samples in laser Doppler anemometry signal processing 

      Dios Otín, Víctor Federico; Comerón Tejero, Adolfo; García Vizcaíno, David (2001-05)
      Article
      Accés obert
      The minimum number of samples that must be taken from a sinusoidal signal affected by white Gaussian noise, in order to find its frequency with a predetermined maximum error, is derived. This analysis is of interest in ...
    • On the improvement of the electromagnetic coupling between infrared point-contact detectors and laser beams 

      Comerón Tejero, Adolfo; Bolomey, Jean Charles (1984-01-09)
      Article
      Accés obert
      The electromagnetic coupling between a gaussian beam and whisker structures such as those found in some kinds of non-linear devices used at infrared frequencies is investigated. Calculations show the potential improvement ...
    • Optimised data-gluing method for mixed analog/photon-counting lidar signals 

      Lange, Diego; Kumar, Dhiraj; Rocadenbosch Burillo, Francisco; Sicard, Michaël; Comerón Tejero, Adolfo (2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In atmospheric LIDAR (Light Detection and Ranging) remote sensing, the dynamic range of the return power signals can span up to five orders of magnitude. Modern acquisition systems such as those based on LicelTM transient ...
    • Optimización de un detector de fase muestreado para aplicaciones de sintetización de frecuencias de microondas 

      Pascual, C.; Comerón Tejero, Adolfo; Torres Torres, Francisco (1992)
      Text en actes de congrés
      Accés obert
      A new design of Sampling Phase Detector (SPD) based on the possibility of properly bias the step recovery diode (SRD) is presented. The automatic measurement system expressly designed for this work shows that drastic ...
    • Origin and pathways of the mineral dust transport to two Spanish EARLINET sites: effect on the observed columnar and range-resolved dust optical properties 

      Mandija, Florian; Sicard, Michaël; Comerón Tejero, Adolfo; Alados Arboledas, Lucas; Guerrero Rascado, Juan Luis; Barragán Cuesta, Rubén; Bravo Aranda, J. A.; Granados Muñoz, María José; Lyamani, H.; Muñoz Porcar, Constantino; Rocadenbosch Burillo, Francisco; Rodríguez Gómez, Alejandro Antonio; García Vizcaíno, David; Valenzuela, Antonio (2017-05-01)
      Article
      Accés obert
      In this paper, is presented a method for estimation of the effect of the transport process to aerosol optical properties. Aerosol optical data retrieved by lidars and sun-photometer measurements, are applied to Saharan ...
    • Overview of the wew version 3 NASA Micro-Pulse Lidar Network (MPLNET) automatic precipitation detection algorithm 

      Lolli, S.; Vivone, Gemine; Lewis, Jasper R.; Sicard, Michaël; Welton, E.J.; Campbell, James R.; Comerón Tejero, Adolfo; D'Adderio, L.P.; Tokay, A.; Giunta, Aldo; Pappalardo, Gelsomina (Multidisciplinary Digital Publishing Institute (MDPI), 2020-01-01)
      Article
      Accés obert
      Precipitation modifies atmospheric column thermodynamics through the process of evaporation and serves as a proxy for latent heat modulation. For this reason, a correct precipitation parameterization (especially for ...
    • Overview of wind Lidar techniques and current related developments at the Technical University of Catalonia 

      Tomás Martínez, Sergio; Muñoz Porcar, Constantino; Sicard, Michaël; Rocadenbosch Burillo, Francisco; Rodríguez Gómez, Alejandro Antonio; Comerón Tejero, Adolfo (2008)
      Text en actes de congrés
      Accés obert
      The Lidar group in the Technical University of Catalonia is actively working in wind lidar techniques. An extensive review of such techniques is presented. A special emphasis is made on the direct Doppler technique and the ...
    • Parameter design of a biaxial lidar ceilometer 

      Gregorio López, Eduard; Rocadenbosch Burillo, Francisco; Tiana Alsina, Jordi; Comerón Tejero, Adolfo; Sanz Cortiella, Ricardo; Rosell Polo, Joan Ramon (2012-07-11)
      Article
      Accés restringit per política de l'editorial
      This paper presents parameter design methodology and related optomechanical engineering of a 905-nm diode-laser biaxial, eye-safe lidar ceilometer prototype for cloud-height monitoring. Starting with a brief review of the ...
    • Performance assessment of a homodyne laser radar for surface displacement monitoring 

      Rodríguez Gómez, Alejandro Antonio; Comerón Tejero, Adolfo; Mesalles Nalda, Eloy (Spie-Int Society Optical Engineering, 2001-12-31)
      Article
      Accés obert
    • Planetary boundary layer height and wind field characterization by means of a lidar at the Teide Observatory in the Canary Islands 

      Sicard, Michaël; Tomás Martínez, Sergio; Comerón Tejero, Adolfo; Rocadenbosch Burillo, Francisco; Rodríguez Gómez, Alejandro Antonio; Muñoz Porcar, Constantino; Batet Torrell, Óscar (2008)
      Text en actes de congrés
      Accés obert
      A lidar field campaign was performed between 30th June and 4th July 2007 in the Teide Observatory in the Canarian island of Tenerife to characterize the atmosphere of this astrophysical observation site in terms of nocturnal ...
    • PLL de microondas con tiempo de adquisición reducido 

      Berenguer Sau, Jordi; Artal, E.; Corbella Sanahuja, Ignasi; Comerón Tejero, Adolfo (1986)
      Text en actes de congrés
      Accés obert
      The behaviour of a PLL where the VCO is injection-locked to the reference frequency is studied. It is experimentally shown that the phase acquisition time can be reduced relative to the non-injection locked VCO situation. ...
    • PLL de microondas con tiempo de adquisición reducido 

      Berenguer Sau, Jordi; Artal, E.; Corbella Sanahuja, Ignasi; Comerón Tejero, Adolfo (1986)
      Text en actes de congrés
      Accés obert
      The behaviour of a PLL where the VCO is injection-locked to the reference frequency is studied. It is experimentally shown that the phase acquisition time can be reduced relative to the non-injection locked VCO situation. ...
    • PLL's de microondas con el VCO sincronizado por inyección: aplicaciones 

      Berenguer Sau, Jordi; Comerón Tejero, Adolfo; Artal, Eduardo (1989)
      Text en actes de congrés
      Accés obert
      A system which combines the properties of the PLL systems and the injection locking ones is described. Its theoretical behaviour is analysed and some practical applications are discussed. Its performance in these aplications ...
    • Pols, gasos, vent i cendres: radars làser per al sondeig de l’atmosfera 

      Comerón Tejero, Adolfo (Societat Catalana de Tecnologia, 2010-07-15)
      Audiovisual
      Accés obert
      La recent erupció del volcà Eyjafjallajökull és un exemple de l’impacte que els aerosols atmosfèrics poden tenir en el quefer diari de milers de persones i en l’economia d’arreu del món. Aquest esdeveniment ha estat ...
    • Power budget and performance assessment for the RSLAB multispectral elastic/raman lidar system 

      Kumar, Dhiraj; Lange, Diego; Rocadenbosch Burillo, Francisco; Tomas, Sergio; Sicard, Michaël; Muñoz Porcar, Constantino; Comerón Tejero, Adolfo (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The need of a multi-spectral lidar has widely been experienced in last few years with a view to invert the optical and microphysical properties of aerosols and their impact on the climate change. As a part of the EARLINET-GALION ...
    • Practical analytical backscatter error bars for elastic one-component lidar inversion algorithm 

      Rocadenbosch Burillo, Francisco; Md. Reba, Mohd Nadzri; Sicard, Michaël; Comerón Tejero, Adolfo (2010-06-10)
      Article
      Accés obert
    • Profiling of aerosol microphysical properties at several EARLINET/AERONET sites during the July 2012 ChArMEx/EMEP campaign 

      Granados Muñoz, María José; Navas Guzmán, Francisco; Guerrero Rascado, Juan Luis; Bravo Aranda, Juan Antonio; Binietoglou, Ioannis; Nepomuceno Pereira, Sergio; Basart Alpuente, Sara; Baldasano Recio, José María; Belegante, Livio; Chaikovsky, Anatoli; Comerón Tejero, Adolfo; D'Amico, Giuseppe; Muñoz Porcar, Constantino; Rodríguez, Alejandro; Sicard, Michaël; Nickovic, Slobodan; Papayannis, Alexander; Pappalardo, Gelsomina; Wandinger, Ulla; Alados Arboledas, Lucas (European Geosciences Union, 2016-06-09)
      Article
      Accés obert
      The simultaneous analysis of aerosol microphysical properties profiles at different European stations is made in the framework of the ChArMEx/EMEP 2012 field campaign (9-11 July 2012). During and in support of this campaign, ...
    • Quasi-analytical determination of noise-induced error limits in lidar retrieval of aerosol backscatter coefficient by the elastic, two-component algorithm 

      Sicard, Michaël; Comerón Tejero, Adolfo; Rocadenbosch Burillo, Francisco; Rodríguez Gómez, Alejandro Antonio; Muñoz Porcar, Constantino (2009-01)
      Article
      Accés restringit per política de l'editorial
      The elastic, two-component algorithm is the most common inversion method for retrieving the aerosol backscatter coefficient from ground- or space-based backscatter lidar systems. A quasi-analytical formulation of the ...
    • Radioenlace digital a 11 GHz para telemando y telecontrol 

      Artal, E.; Cardama Aznar, Ángel; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Elias Fusté, Antoni; Ferrando, Miguel; Jofre Roca, Lluís; de los Reyes, Elías (Institute of Electrical and Electronics Engineers (IEEE), 1984)
      Text en actes de congrés
      Accés obert
      A digital radio-relay link in the band 10.7- 11.7 GHz developed for the remote control system of ENHER is presented. The objectives were the construction of a reliable and yet low-cost transmitter-receiver. To accomplish ...
    • Receptor para TV difundida directamente desde satélites 

      Artal, E.; Cardama Aznar, Ángel; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Elias Fusté, Antoni; Ferrando, M.; Jofre Roca, Lluís; de los Reyes, Elías (Institute of Electrical and Electronics Engineers (IEEE), 1984)
      Text en actes de congrés
      Accés obert
      The direct broadcast satellite receiver in the 12 GHz band developed in the Electrophysics Department in cooperation with the R & D Departments of Mier Allende, S.A. and Tagra, S.A. is described. It features a low-noise ...